Fig. 3From: Millennial paleotsunami history at Minna Island, southern Ryukyu Islands, JapanTopography and GPR profile around the tsunami boulder: a profile along the GPR lines in Fig. 2b; b processed subbottom profile with interpretation. Blue dots and lines show strong reflectors in the GPR survey section. White arrows indicate reflectors that are parallel to the ground surface. Yellow arrowheads indicate reflectors that are parallel to the beach slopeBack to article page